To be honest the fact that Zed built the time machine didn't surprise me at all. He's the only one who knows how to build anything that actually works on this show.
BTW I would have liked if LOST had given us ANY answers in the first 2 SEASONS! Was a fan at first but after a while I just couldn't care anymore.
I'm sad that this show is ending but at least it's going to end on a high. I don't think you guys have had a bad episode yet. Well, the first few episodes weren't great but once you've seen the rest of the show you start to appreciate them a lot more. I mean, they disarmed a bomb in the first episode and no one had a clue that Big Pete would even be a main character back then. Please consider doing another season but only if you can keep it of a similar quality. I am really going to miss this show, I've been supporting it from episode one and it's only got better.